linux-kernel - Re: [QUICKLIST 0/4] Arch independent quicklists V2

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Message-ID: <20070313200313.GG10459@waste.org>
Date:	Tue, 13 Mar 2007 15:03:14 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Nick Piggin <nickpiggin@...oo.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>, clameter@....com,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [QUICKLIST 0/4] Arch independent quicklists V2

On Tue, Mar 13, 2007 at 10:30:10AM -0700, Jeremy Fitzhardinge wrote:
> Nick Piggin wrote:
> > However we still have to visit those to-be-unmapped parts of the page
> > table,
> > to find the pages and free them. So we still at least need to bring it
> > into
> > cache for the read... at which point, the store probably isn't a big
> > burden.
> 
> Why not try to find a place to stash a linklist pointer and link them
> all together?  Saves the pulldown pagetable walk altogether.

Because we'd need one link per mm that a page is mapped in?

-- 
Mathematics is the supreme nostalgia of our time.
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